2 * GeekOS C code entry point
3 * Copyright (c) 2001,2003,2004 David H. Hovemeyer <daveho@cs.umd.edu>
4 * Copyright (c) 2003, Jeffrey K. Hollingsworth <hollings@cs.umd.edu>
5 * Copyright (c) 2004, Iulian Neamtiu <neamtiu@cs.umd.edu>
8 * This is free software. You are permitted to use,
9 * redistribute, and modify it as specified in the file "COPYING".
12 #include <geekos/bootinfo.h>
13 #include <geekos/string.h>
14 #include <geekos/screen.h>
15 #include <geekos/mem.h>
16 #include <geekos/crc32.h>
17 #include <geekos/tss.h>
18 #include <geekos/int.h>
19 #include <geekos/kthread.h>
20 #include <geekos/trap.h>
21 #include <geekos/timer.h>
22 #include <geekos/keyboard.h>
23 #include <geekos/io.h>
24 #include <geekos/serial.h>
25 #include <geekos/reboot.h>
26 #include <geekos/mem.h>
27 #include <geekos/paging.h>
28 #include <geekos/ide.h>
29 #include <geekos/malloc.h>
31 #include <geekos/debug.h>
34 #include <geekos/vm.h>
35 #include <geekos/gdt.h>
37 #include <geekos/vmm_stubs.h>
42 #define SPEAKER_PORT 0x61
46 void Buzz(unsigned delay, unsigned num)
52 init=In_Byte(SPEAKER_PORT);
55 Out_Byte(SPEAKER_PORT, init|0x2);
56 for (j=0;j<delay;j++) {
59 Out_Byte(SPEAKER_PORT, init);
60 for (j=0;j<delay;j++) {
66 inline void MyOut_Byte(ushort_t port, uchar_t value)
68 __asm__ __volatile__ (
71 : "a" (value), "Nd" (port)
76 * Read a byte from an I/O port.
78 inline uchar_t MyIn_Byte(ushort_t port)
82 __asm__ __volatile__ (
97 void Buzzer(ulong_t arg) {
98 ulong_t *doIBuzz = (ulong_t*)arg;
100 // Quick and dirty hack to save my hearing...
101 // I'm not too worried about timing, so I'll deal with concurrency later...
113 void Keyboard_Listener(ulong_t arg) {
114 ulong_t * doIBuzz = (ulong_t*)arg;
117 Print("Press F4 to turn on/off the speaker\n");
119 while ((key_press = Wait_For_Key())) {
120 if (key_press == KEY_F4) {
121 Print("\nToggling Speaker Port\n");
122 SerialPrintLevel(100,"\nToggling Speaker Port\n");
123 *doIBuzz = (*doIBuzz + 1) % 2;
124 } else if (key_press == KEY_F5) {
125 Print("\nMachine Restart\n");
126 SerialPrintLevel(100,"\nMachine Restart\n");
127 machine_real_restart();
135 extern char BSS_START, BSS_END;
140 /* This is an ugly hack to get at the VM memory */
141 ulong_t vm_range_start;
142 ulong_t vm_range_end;
143 ulong_t guest_kernel_start;
144 ulong_t guest_kernel_end;
148 int AllocateAndMapPagesForRange(uint_t start, uint_t length, pte_t template_pte)
152 for (address=start;address<start+length;address+=PAGE_SIZE) {
154 pte_t pte = template_pte;
159 pte.pageBaseAddr=PAGE_ALLIGNED_ADDR(page);
161 KASSERT(MapPage((void*)address,&pte,1));
170 * Kernel C code entry point.
171 * Initializes kernel subsystems, mounts filesystems,
172 * and spawns init process.
174 void Main(struct Boot_Info* bootInfo)
199 // Print("Done; stalling\n");
204 SerialPrint("Dumping VM kernel Code (first 128 bytes @ 0x%x)\n", 0x100000);
205 SerialMemDump((unsigned char *)0x100000, 256);
207 SerialPrint("Dumping kernel Code (first 512 bytes @ 0x%x)\n",KERNEL_START);
208 SerialMemDump((unsigned char *)VM_KERNEL_START, 512);
215 struct Kernel_Thread * key_thread;
216 struct Kernel_Thread * spkr_thread;
220 SerialPrint("Dumping BIOS code ffff0-fffff\n\n");
221 SerialMemDump((unsigned char *)0x10fff0, 16);
223 SerialPrint("Dumping kernel Code (first 512 bytes @ 0x%x)\n",KERNEL_START);
224 SerialMemDump((unsigned char *)VM_KERNEL_START, 512);
227 SerialPrint("Noisemaker and keyboard listener threads\n");
228 key_thread = Start_Kernel_Thread(Keyboard_Listener, (ulong_t)&doIBuzz, PRIORITY_NORMAL, false);
229 spkr_thread = Start_Kernel_Thread(Buzzer, (ulong_t)&doIBuzz, PRIORITY_NORMAL, false);
241 TODO("Write a Virtual Machine Monitor");